Tell us what’s happening:
I’ve been trying different ways to complete this challenge all working perfectly both locally and live environment but for some reason the test does not seem to pass.
You should not be submitting the /json route as a solution. The tests expect your app URL, and they add the necessary routes/parameters themselves. That is, by submitting https://example.com/json, the tests will try to make a request to https://example.com/json/json
You should only be defining 1GET /json route. Currently, you have 2.